Casing-ring and tube-hanger for wells



{No Model.

A. T. WOLFE.

CASING RING AND TUBE HANGER FOR WELLS.

No. 580,442. Patent-ed Apr. 13, 1897.

MINI

Wf/YVTjjfZ ABRAHAM T. YVOLFE, OF TOLEDO, OHIO.

CASING-RING AND TUBE-HANGER FOR WELLS.

SPECIFICATION formingpart of Letters Patent No. 580,442, dated April 13,1897.

Application filed October 5, 1896- To all whom, it may concern:

Be it known that I, ABRAHAM T. WOLFE, of Toledo, county of Lucas, andState of Ohio, have invented certain new and useful Improvements inCasing-Rings and Tube-Hangers for Wells; and I do hereby declare thatthe following is a full, clear, and exact description of the invention,which will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to the figures of reference marked thereon, which form part of thisspecification.

My invention relates to a casinghead and tube-hanger for wells, and hasfor its object 'to provide a coupling between the tubing and the usualT-coupling which shall be of sufficient strength and arranged towithstand an unusual amount of strain, and thereby prevent breakage atthese points, and, if broken, shall retain the tube in place in thewell.

The invention further consists in the peculiar formation of saidcoupling, to wit: its conical or spherical taper toward its extremeupper point or at the base of the screw-threaded projection to which theT-coupling attaches, whereby strength is secured at this point, as theannular screw-threaded projection is reinforced by the metal of thecoupling.

The invention further consists in the parts as hereinafter shown,described, and claim ed.

The invention consists in the parts and com bination of partshereinafter specified, and pointed out in the claim.

In the drawings, Figure 1 is an elevation of a casing-ring orcasing-head with the hanger in position,with the T-coupling securedthereto, showing the pump rod and tube broken off. Fig. 2 is alongitudinal vertical section of the casing-ring or casing-head therein,showing the tube-hanger and conical screw-threaded tubular projectionfor attachment to the T- coupling.

1 designates the casing-ring or casing-head, and for convenience ofdescription I will hereinafter designate the same the casinghead, havingan internally-screw-threaded portion 2 to receive the screw-threaded endof the casing 3, as in the usual construction. Casing-head 1 is formedwith an annular Serial No. 607,852. (No model.)

shouldered portion 4, upon which rests a hanger 5, constituting one ofthe essential elements of my invention and which will therefore beexplained in detail. Hanger 5 comprises a cap of a maximum diameter atthe base to fit within the annulus of the easing'head and rest upon thebase 4, saidhanger being held to its seat upon the internal shoulder 4by means of the setscrews 5, screwing through the side of thecasing-head above the shoulder a and bearing against the in clined upperside of the hanger. The hanger is provided with a conical elevation inreinforcementof the same to a truncation of the cone, as at X X, fromwhich projects a conical screw-threaded extension 6 to receive theinternally-screw -threaded T-coupling 7, of like contour, provided witha stuffing-box 8, through which the pump-rod 9 reciprocates. Hanger 5 isannular, the central orifice being of a diameter to receive ascrew-thread, into which tubing 10 is screwed and suspended therefrom.

From the foregoing description it will be seen that when tubing 10 issecured into the hanger 5 it has the broad base-support 4, thatvirtually precludes the possibility of lateral sway when the derrick isaffected by wind-pressure, and that by reinforcement of thescrew-threaded portion 6 in its adjustment to the T-coupling a maximumstrength is insured and the separation or fracture of these parts isavoided of lateral swaying. In addition to the rigidity of the tube andcoupling-support it will be seen that I have simplified the connectionas'between the tube and T-coupling or (the polish-rod and pumpbarrel)from that heretofore employed and that I have practically insuredagainst the fracture of the parts due to lateral swaying of the derrickand its connection therewith as occasioned by the frequent galesincident to the territory in which pumping-wells are employed.

My invention is particularly designed for use in oil-wells, and inthedescription I have used language applicable thereto. At the same time Iapprehend that the inexpensive construction and close'assemblage ofparts are applicable to pumping devices of all characters and so wishthe invention to be interpreted.

WVhat I claim is In a tube-hanger for Wells, a casing-head 5 providedwith an annular internal shoulder, a hanger comprising a plate held toits seat upon the shoulder, the upper side of the hanger being sphericaland terminating in a screw-threaded projection, a tube secured to 10 anddepending from the hanger, and a T- coupling screwed upon the reinforcedthreaded projection upon the upper face of the hanger.

In testimony that I claim the foregoing as my own I hereby afliX mysignature in pres' ence of two Witnesses.

ABRAHAM T. IVOLFE.

\Vitnesses:

WILLIAM WEBSTER, MAUDE SOHUMACHER.

